Calcarine fissure
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The calcarine fissure, or calcarine sulcus, is located on the medial surface of the occipital lobe and divides the visual cortex (aka calcarine cortex) into two.
The fissure is variable in course (figure 1), but is generally oriented horizontally, anteriorly joining the parieto-occipital fissure, and posteriorly reaching a variable distance toward or even beyond (and onto the lateral surface) of the occipital pole.
Below the fissure is the infracalcarine region, comprised of the fusiform gyrus and lingual gyrus, whilst above the fissure is the cuneus.
Buried deep in the fissure is the calcarine artery, a branch of the posterior cerebral artery, which supplies the region.
-<p>The <strong>calcarine fissure</strong>, or<strong> calcarine sulcus</strong>, is located on the medial surface of the occipital lobe and divides the visual cortex (aka calcarine cortex) into two. </p><p>The fissure is variable in course, but is generally oriented horizontally, anteriorly joining the <a href="/articles/parieto-occipital-fissure">parieto-occipital fissure</a>, and posteriorly reaching a variable distance toward or even beyond (and onto the lateral surface) of the occipital pole. </p><p>Below the fissure is the infracalcarine region, comprised of the <a href="/articles/fusiform-gyrus">fusiform gyrus</a> and <a href="/articles/lingual-gyrus">lingual gyrus</a>, whilst above the fissure is the <a href="/articles/cuneus">cuneus</a>. </p><p>Buried deep in the fissure is the <a href="/articles/calcarine-artery">calcarine artery</a>, a branch of the <a href="/articles/posterior-cerebral-artery">posterior cerebral artery</a>, which supplies the region. </p>- +<p>The <strong>calcarine fissure</strong>, or<strong> calcarine sulcus</strong>, is located on the medial surface of the occipital lobe and divides the visual cortex (aka calcarine cortex) into two. </p><p>The fissure is variable in course (figure 1), but is generally oriented horizontally, anteriorly joining the <a href="/articles/parieto-occipital-fissure">parieto-occipital fissure</a>, and posteriorly reaching a variable distance toward or even beyond (and onto the lateral surface) of the occipital pole. </p><p>Below the fissure is the infracalcarine region, comprised of the <a href="/articles/fusiform-gyrus">fusiform gyrus</a> and <a href="/articles/lingual-gyrus">lingual gyrus</a>, whilst above the fissure is the <a href="/articles/cuneus">cuneus</a>. </p><p>Buried deep in the fissure is the <a href="/articles/calcarine-artery">calcarine artery</a>, a branch of the <a href="/articles/posterior-cerebral-artery">posterior cerebral artery</a>, which supplies the region. </p>
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Figure 1: Calcarine Sulcuscalcarine sulcus
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